This semi-slick tire borrows its tread design from the trail version of the Rekon, but with smaller and shorter knobs. Use it as a rear tire paired with a more aggressive front tread, or front and rear for short track racing Semi-slick XC race tire EXO: additional densely woven, lightweight, flexible fabric added to casing for enhanced puncture protection TR: tubeless ready Intended Use: Mountain ISO Diameter: 622 / mountain / 29" Labeled Size: choose; 29 x 2.25", or 29 x 2.35" Tire Bead: Folding Tire Diameter: 29" Tire Type: Tubeless Ready Compound: dual compound TPI: 120 Flat Protection: Sidewall Weight: 680g. (2.25"); 710g. (2.35"); 759g (2.4")